<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">I am now getting this error, which is complaining for an operation for the shell matrix. I have only specified the following operation for the matrix: “<span style="color: rgb(0, 125, 181); font-family: Monaco;" class="">MATOP_MULT</span>”.</div><div class=""><br class=""></div><div class="">I am calling the solver with -pc_type fieldsplit.</div><div class=""><br class=""></div><div class="">What can I do to move forward with the solution? </div><div class=""><br class=""></div><div class="">Thanks,</div><div class="">Manav</div><div class=""> </div><div class=""><br class=""></div><div class=""><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[1;31m[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0;39m[0;49m[0]PETSC ERROR: No support for this operation for this object type</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: Mat type shell</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: See <a href="http://www.mcs.anl.gov/petsc/documentation/faq.html" class="">http://www.mcs.anl.gov/petsc/documentation/faq.html</a> for trouble shooting.</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: Petsc Release Version 3.7.4, Oct, 02, 2016 </span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: /Users/manav/Library/Developer/Xcode/DerivedData/MAST-crggwcqrouiyeucduvscdahjauvx/Build/Products/Debug/examples on a arch-darwin-cxx-opt named Blackbird.local by manav Sat Feb 11 11:17:44 2017</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: Configure options --prefix=/Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/../ --CC=mpicc-openmpi-clang38 --CXX=mpicxx-openmpi-clang38 --FC=mpif90-openmpi-clang38 --with-clanguage=c++ --with-fortran=0 --with-mpiexec=/opt/local/bin/mpiexec-openmpi-clang38 --with-shared-libraries=1 --with-x=1 --with-x-dir=/opt/X11 --with-debugging=0 --with-lapack-lib=/usr/lib/liblapack.dylib --with-blas-lib=/usr/lib/libblas.dylib --download-superlu=yes --download-superlu_dist=yes --download-suitesparse=yes --download-mumps=yes --download-scalapack=yes --download-parmetis=yes --download-metis=yes --download-hypre=yes --download-ml=yes</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: #1 MatMultTransposeAdd() line 2486 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/mat/interface/matrix.c</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: #2 MatMultTranspose_Nest() line 109 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/mat/impls/nest/matnest.c</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: #3 MatMultTranspose() line 2320 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/mat/interface/matrix.c</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: #4 SNESNEWTONLSCheckLocalMin_Private() line 25 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/snes/impls/ls/ls.c</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: #5 SNESSolve_NEWTONLS() line 259 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/snes/impls/ls/ls.c</span></div><div style="margin: 0px; line-height: normal; font-family: Monaco;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[0]PETSC ERROR: #6 SNESSolve() line 4005 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/snes/interface/snes.c</span></div></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On Feb 9, 2017, at 11:29 AM, Barry Smith <<a href="mailto:bsmith@mcs.anl.gov" class="">bsmith@mcs.anl.gov</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><br class=""><blockquote type="cite" class="">On Feb 8, 2017, at 11:39 PM, Dave May <<a href="mailto:dave.mayhem23@gmail.com" class="">dave.mayhem23@gmail.com</a>> wrote:<br class=""><br class="">Any time you modify one of the submats, you need to call assembly begin/end on that sub matrix AND on the outer matnest object.<br class=""></blockquote><br class=""> Weird, and prone to errors it seems to me. Perhaps this needs to be rethought<br class=""><br class=""><blockquote type="cite" class=""><br class="">Thanks,<br class=""> Dave<br class=""><br class=""><br class="">On Wed, 8 Feb 2017 at 22:51, Manav Bhatia <<a href="mailto:bhatiamanav@gmail.com" class="">bhatiamanav@gmail.com</a>> wrote:<br class="">aha.. that might be it.<br class=""><br class="">Does that need to be called for the global matrix after each assembly of the Jacobian blocks, or just once for the whole matrix?<br class=""><br class="">-Manav<br class=""><br class=""><blockquote type="cite" class="">On Feb 8, 2017, at 3:47 PM, Barry Smith <<a href="mailto:bsmith@mcs.anl.gov" class="">bsmith@mcs.anl.gov</a>> wrote:<br class=""><br class=""><br class=""><blockquote type="cite" class="">On Feb 8, 2017, at 3:40 PM, Manav Bhatia <<a href="mailto:bhatiamanav@gmail.com" class="">bhatiamanav@gmail.com</a>> wrote:<br class=""><br class="">Hi,<br class=""><br class=""> I have a nested matrix with 2x2 blocks. The blocks (1,1) and (2,2) are AIJ matrices and blocks (1,2) and (2,1) and shell matrices. I am calling the code with the following arguments: -pc_type fieldsplit , and get the error shown below.<br class=""><br class=""> I see that the error is complaining about the matrix being in unassembled state, but I think I am initializing and calling assembly end routines on both the diagonal blocks. Still, there is something obvious I am missing.<br class=""></blockquote><br class=""> It is complaining about the outer most matrix, not the blocks. Perhaps you haven't finished with setting up your nest matrix?<br class=""><br class=""><blockquote type="cite" class=""><br class=""> I would appreciate any guidance on this.<br class=""><br class="">Regards,<br class="">Manav<br class=""><br class=""><br class=""><br class="">[1;31m[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------<br class="">[0;39m[0;49m[0]PETSC ERROR: Object is in wrong state<br class="">[0]PETSC ERROR: Not for unassembled matrix<br class="">[0]PETSC ERROR: See <a href="http://www.mcs.anl.gov/petsc/documentation/faq.html" class="">http://www.mcs.anl.gov/petsc/documentation/faq.html</a> for trouble shooting.<br class="">[0]PETSC ERROR: Petsc Release Version 3.7.4, Oct, 02, 2016<br class="">[0]PETSC ERROR: /Users/manav/Library/Developer/Xcode/DerivedData/MAST-crggwcqrouiyeucduvscdahjauvx/Build/Products/Debug/examples on a arch-darwin-cxx-opt named <a href="http://Dhcp-90-250.HPC.MsState.Edu" class="">Dhcp-90-250.HPC.MsState.Edu</a> by manav Wed Feb 8 15:28:04 2017<br class="">[0]PETSC ERROR: Configure options --prefix=/Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/../ --CC=mpicc-openmpi-clang38 --CXX=mpicxx-openmpi-clang38 --FC=mpif90-openmpi-clang38 --with-clanguage=c++ --with-fortran=0 --with-mpiexec=/opt/local/bin/mpiexec-openmpi-clang38 --with-shared-libraries=1 --with-x=1 --with-x-dir=/opt/X11 --with-debugging=0 --with-lapack-lib=/usr/lib/liblapack.dylib --with-blas-lib=/usr/lib/libblas.dylib --download-superlu=yes --download-superlu_dist=yes --download-suitesparse=yes --download-mumps=yes --download-scalapack=yes --download-parmetis=yes --download-metis=yes --download-hypre=yes --download-ml=yes<br class="">[0]PETSC ERROR: #1 MatMult() line 2248 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/mat/interface/matrix.c<br class="">[0]PETSC ERROR: #2 PCApplyBAorAB() line 717 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/ksp/pc/interface/precon.c<br class="">[0]PETSC ERROR: #3 KSP_PCApplyBAorAB() line 274 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/include/petsc/private/kspimpl.h<br class="">[0]PETSC ERROR: #4 KSPGMRESCycle() line 156 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/ksp/ksp/impls/gmres/gmres.c<br class="">[0]PETSC ERROR: #5 KSPSolve_GMRES() line 240 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/ksp/ksp/impls/gmres/gmres.c<br class="">[0]PETSC ERROR: #6 KSPSolve() line 656 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/ksp/ksp/interface/itfunc.c<br class="">[0]PETSC ERROR: #7 SNESSolve_NEWTONLS() line 230 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/snes/impls/ls/ls.c<br class="">[0]PETSC ERROR: #8 SNESSolve() line 4005 in /Users/manav/Documents/codes/numerical_lib/petsc/petsc-3.7.4/src/snes/interface/snes.c<br class=""><br class=""></blockquote><br class=""></blockquote><br class=""></blockquote><br class=""></div></div></blockquote></div><br class=""></body></html>